Home / 890,243.12-1,334,431.56-328,919.60

Finding the Fourth Proportional to 890,243.12, 1,334,431.56 and 328,919.60

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Solution

The fourth proportional to 890,243.12, 1,334,431.56 and 328,919.60 is: 493,034.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,243.12 : 1,334,431.56 = 328,919.60 : x
  2. Step 2: Convert to fraction form
    890,243.12/1,334,431.56 = 328,919.60/x
  3. Step 3: Cross multiply
    890,243.12x = 1,334,431.56 × 328,919.60
  4. Step 4: Simplify right side
    890,243.12x = 438,920,694,942.58
  5. Step 5: Solve for x
    x = 438,920,694,942.58/890,243.12
  6. Step 6: Final answer
    x = 493,034.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.